Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...

This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.

Teaches Young Readers About Shapes And Patterns Using The Seasons Of The Year And Pictures Of Nature.

Más que un libro de viajes, el presente texto es un libro sobre los viajes, sobre cómo y por qué puede alguien llegar a hacerse etnólogo, y sobre el modo en que se integran las aventuras del explorador y las investigaciones del científico hasta llegar a formar la experiencia propia del etnólogo. El autor trata de analizar estas cuestiones cotejando sus recuerdos y proponiendo un recorrido que no renuncie a los pintorescos detalles, pero que a la vez los sitúe en una perspectiva más amplia.

Introduces fruits, uses simple comparisons to explore this group, and offers suggestions for healthy eating.